Hi,
That's correct. When you edit a product you have a "page layout" setting near the bottom to select that new layout you created.
If you look at the code in the view file, you can see a lot of HTML comments (the green text in my screenshot):
i.imgur.com/XPT40Fu.png
These delimit each element you can drag'n'drop in the interface at the top.
The area for the options starts with the tag <!-- OPTIONS --> :
i.imgur.com/vpb0u5y.png
So you can just write your text after that line.
For example:
<!-- OPTIONS -->
Select Options To See Price.
And if you want to add some CSS on this text, then just add a div with a class:
<!-- OPTIONS -->
<div class="myclass">Select Options To See Price.</div>
And then you can add normal CSS like:
.myclass { font-size : 20px; line-height: 1.5 ; font-weight : bold; }
As you can see, it doesn't require knowing PHP, just understanding a bit HTML and CSS.